User Services/Sync/Migration
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General discussion of migration issues for Sync.next
- Users not currently using sync
- No migration issues for , just use FxA for the first time.
- Existing Sync user
- If they manually chose to use Sync.next, they would be informed that all < Fx29 devices will not sync to > Sync.next.
- Fx could detect if sync account clients all use > Fx29, then message user to use sync.next
- Feature will be off and enabled via pref in Nightly/Aurora/Beta
- increases risk as little public user testing
- Since it's behind pref, FxAccount user may have to be recreated, Sync data is not guaranteed.
- Do we allow for use of custom sync server? Will they still be able to use FxA in this flow?